Abstract
Morphometric analysis is a pertinent scientific approach in any hydrological analysis, and it is necessary in the progress and management of drainage basin. Identification of areas at risk of erosion, and the prioritization of 48 sub-watersheds of Inaouene basin, was done by using linear, relief and areal aspects of watershed. The research carried out the use of geographic information system spatial data. The linear aspects include stream number, stream sequence, stream length, and bifurcation ratio, mean length of stream order, stream length ratio, mean stream length ratio, and form factor. The areal aspect includes frequency of stream, drainage density, texture ratio, channel length constant, and overland flow maintenance length. Ultimately, the relief dimensions included relief proportion, relief and ruggedness number. The array of compound (Cp) values computed allow us to set the priority ranks and classify the sub-watershed into three priority ranks groups: low, moderate, and high priority. Such morphometric analyses can be used therefore as a watershed erosion status estimator to prioritize land and water conservation initiatives and natural resources management.
Highlights
Drainage basins, catchments, and sub-catchments are the fundamental units for managing land and water resources and reducing the impact of natural disasters on sustainable development (Moore et al 1994; Abdul Rahaman et al 2015; Meshram et al 2021a, b, c, d)
In various works of literature, the compound parameter (Cp) model is a very precise way for evaluating earth surface attributes, for the basin scale, and it is widely utilized for sustainable water resource management and scientific planning of sub-watersheds in datascarce locations (Altaf et al 2014; Benzougagh et al 2016, 2017; Hembram and Saha 2020)
The inter-correlation matrix (Table 4) was constructed from the 48 sub-watersheds of the Inaouene River using eleven chosen morphometric parameters. When these 12 morphometric variables were submitted to the matrix of correlation, there was found to be a high positive correlation between drainage densities with compactness coefficient (Cc) and infiltration number (If), surface drainage density ratio (T), form factor (Ff)
Summary
Catchments, and sub-catchments are the fundamental units for managing land and water resources and reducing the impact of natural disasters on sustainable development (Moore et al 1994; Abdul Rahaman et al 2015; Meshram et al 2021a, b, c, d). The present work integrates morphometric analysis (MA) model with the techniques of Spatial Remote Sensing (SRS) and Geographical Information System (GIS) to determine the critical soil erosion prone areas to prioritize watershed prioritization studies and to analyze various fields of catchment and watershed area morphometric parameters (Linear and Shape). In various works of literature, the compound parameter (Cp) model is a very precise way for evaluating earth surface attributes, for the basin scale, and it is widely utilized for sustainable water resource management and scientific planning of sub-watersheds in datascarce locations (Altaf et al 2014; Benzougagh et al 2016, 2017; Hembram and Saha 2020). The Paleozoic terrains, of Cambrian, Ordovician and Visean ages, are varied and strongly metamor-
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